Data Type Mismatch in Criteria Expression

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Hi guys am running through a problem. i hope this can be solve from here,
I have an SQL Query like
SELECT DC_DATE,DC_UID,DC_TIME,@P3 FROM DAYCLOSE WHERE DC_DATE >=@P1 AND DC_DATE <=@P2

cmd.ExecuteReader()

error DataType Mismatch in Criteria Expression

Posted 27-Jul-10 3:29am

anwarntde

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milenalukic · Answer 1 · 2010-07-27T03:48:00

Solution 1

@P1 and @P2 must be dates. if these are text you must use
convert(@P1 as datetime)

Posted 27-Jul-10 3:48am

milenalukic

Scubapro · Answer 2 · 2010-07-27T03:55:00

Solution 2

How are @P1 and @P2 declared?
Seems like their the wrong datatype in regard to DC_DATE.
You could try:

WHERE DC_DATE BETWEEN TO_DATE(@P1,'mm-dd-yyyy') AND TO_DATE(@P2,'mm-dd-yyyy')

and make sure @P1 and @P2 are the same type/format.

Posted 27-Jul-10 3:55am

Scubapro

anwarntde · Answer 3 · 2010-07-27T18:03:00

Hi guys thnk u for ur reply
Parameters are created dynamically based on no of parameters using the statement

for i as byte = 0 to dro("TR_NO_PARAM")-1

Dim p1 As New OleDbParameter(@P1,arrpr(i))
cmd.parameters.Add(P)

Next

if no of param is 2 then it work niceley
ie. P1="28-Jul-2007" {String}
P2="28-Jul-2007" {String}
its not working when we use third parameter
P3="DMALU"{String}